Figure 4. Abundances-at-age of EBS pollock biomass as estimated from NMFS summer groundfish trawl surveys, 1990-2007. Some recent strong year-classes shown as they age are highlighted by gray tones.
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Figure 4. Abundances-at-age of EBS pollock biomass as estimated from NMFS summer groundfish trawl surveys, 1990-2007. Some recent strong year-classes shown as they age are highlighted by gray tones. |